 | Prep for USMLE |
| Forum | Resources | New Posts | Register | Login | » |
|
| Author | 7 Posts | |||||||||||||||||||||||||||||||||||||||||||||||||
|
anp
Forum Junior Topics: 6 Posts: 46 |
The Wechsler adult intelligence scale is standardized IQ test with a mean of 100 and standard deviation of 15. A person with an IQ of 115 is at what percentile of IQ? A-50th, B-68th, C-84th, D-95th, E -99th
|
Prep4USMLE.com
|
Advertisement
|
|
dermatology
| Forum Elite  Topics: 32 Posts: 284
C ..... 84
|
Kamsi
| Forum Guru Topics: 102 Posts: 334
how did U calculate it?
|
dermatology
| Forum Elite Topics: 32 Posts: 284
100 is mean and SD is 15 ..... so if u draw a bell diagram with mean in centre with 100 ... sd as given is 15 so 1st sdwill b - 115 (100+15) 2nd sd willl b 130 (100+15+15) 3rd sd willl b 145 (100+15+15+15) ans as u know 1st sd is 68 % (34+34) 2nd sd is 95.5% 3rd sd is 99.7% so now 115 is on 1st sd....... so mean which is at 50 % plus u have to add area covering first sd = 34 % ie 84 %( 50 +34) i hope this helped ......
|
medocuk
| IM-RES  Topics: 26 Posts: 1462
D: Well done with the explanation.
|
starcraftbw
| Forum Senior Topics: 13 Posts: 164
Prop to dermatology 
|
anp
| Forum Junior Topics: 6 Posts: 46
Dermatology- Thanks a lot. Exam in few days.Ur explanation was of great help. Thanks again.
|
|
| | |||||||||||||||||||||||||||||||
|
This thread is closed, so you cannot post a reply.
Similar forum topicsAdvertise | Support | Premium | Contact |
Your Privacy Choices